Chinese prosecutors have formally arrested four Rio Tinto employees on charges of obtaining trade secrets and commercial bribery, making it more likely the highly-politicised case will be brought to trial.
The four employees were detained in early July on charges of stealing state secrets, a far more serious allegation and one that Rio Tinto and the Australian government have refuted.
The four include Stern Hu, an Australian citizen who was in charge of Rio's iron ore negotiations with China, and three Rio employees who are Chinese citizens – Liu Caikui, Ge Minqiang and Wang Yong.
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